Re: Sort Performance
I am very interested in knowing the answer to this problem. I have noticed that mysql chokes on SELECT statements where:
1) There is a double wildcard LIKE operator in the WHERE clause; and
2) The field referenced in the LIKE clause is used to sort the results.
As a matter of fact, this problem derailed a project I was working on.
In my case, we were sorting a like of about 50,000 names, there were several joins, and the name columns were indexed in the primary table. Queries were often taking half an hour and mysql was consuming massive system resources.
M
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Re: Sort Performance
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